5787 results about "Gear train" patented technology

A surgical instrument including a firing drive configured to selectively advance a firing member and / or cutting member relative to an end effector and, in addition, a reversing drive configured to selectively retract the firing member and / or cutting member relative to the end effector. The firing drive can include a pawl which can be selectively engaged with the firing member in order to advance the firing member, wherein the pawl can be disengaged from the firing member when the reversing drive is engaged with the firing member. The reversing drive can include a gear train having a first gear operably engaged with the firing member and, in addition, a second gear operably engaged with the first gear, wherein the second gear can be selectively operable with the trigger such that an actuation of the trigger can retract the firing member and / or cutting element via the first and second gears.

A surgical instrument comprising a tube shaft at the proximal end of which an instrument head for rotatably supporting an effector is pivotably supported and at the distal end of which an instrument handle is arranged which causes a pivot as well as a bending movement of the instrument head via a bending gear train and a rotation of the effector via a rotation gear train. In the rotation gear train, a motion compensating member is integrated and also is operated via the instrument handle when the bending gear train is operated, and drives the rotation gear train such that an operation of the rotation gear train caused by the pivoting movement of the instrument head, or parts thereof, is compensated.

A power tool transmission is described in which an overload clutch mechanism is arranged to provide a relatively compact power tool. A torque adjustment dial is arranged between the visible portions of the motor housing and the gearbox, and the dial is coupled to a compression spring such that rotation of the dial cause the spring to be compressed or decompressed, thereby adjusting the torque at which the clutch overloads and ratchets. The compression spring is arranged at least partially between the motor and gearbox or gear train, in a space which conventional power tools do not utilized for this purpose. Thus, the dimensions of the power tool's transmission can be reduced with respect to conventional power tools. Furthermore, the space on the gearbox immediately behind a chuck can be used for another purpose other than accommodating the adjustment collar, as is the case with conventional power tools.

A surgical instrument comprising an instrument handle which is linked to a proximal end portion of a tube shaft and at the distal end portion of which an instrument head rotatably supporting an effector is linked so as to be inclinable. The effector includes at least one pivotable engaging element which is operable via an effector operating gear train in cooperation with the instrument handle. The effector operating gear train, in turn, has a pushing rod which is shiftably supported in the tube shaft and which, in the linking area of the instrument head at the tube shaft, abuts a pushing pin shiftably supported in the instrument head, the pushing pin being operatively connected to the engaging element.

An electromechanical surgical device includes an end effector configured to perform at least one function, the end effector including an input drive axle projecting therefrom; and a shaft assembly. The shaft assembly includes a rotatable drive shaft; a proximal neck housing supported at a distal end of an outer tube; a distal neck housing pivotally connected to the proximal neck housing; a pivot pin interconnecting the proximal neck housing and the distal neck housing; and a gear train supported in the proximal neck housing, on the pivot pin, and in the distal neck housing. The gear train includes a proximal gear; an intermediate gear; a distal gear; and a pair of output gears, wherein each output gear defines a coupling socket each configured to selectively receive the drive axle of the end effector.

A circular saw in which cutting speed of a saw blade is smoothly controlled. A speed change mechanism of a circular saw includes first and second rotating shafts disposed parallel to each other, and first and second gear trains having different gear ratios and each having a combination of a drive gear and a driven gear as one unit which are engaged with each other and transmit torque of the first rotating shaft to the second rotating shaft. A torque transmission path via the first gear train is defined as a first power transmission path and a torque transmission path via the second gear train is defined as a second power transmission path, and the transmission path is switched between the first power transmission path and the second power transmission path.

A coupling system for connecting a sun gear to a shaft within a planetary gear train, includes a sun gear coupling connecting the sun gear to the shaft. The sun gear coupling has at least one undulant flexible section joined to an inflexible spindle for accommodating misalignment between the sun gear and the shaft. The flexible section comprises a cylindrical ring having a diameter greater than the diameter of the spindle, and joined to the spindle by two longitudinally spaced apart diaphragms. The juncture between the diaphragms, the ring, and the spindle is curved in cross section on an outer side to improve flexibility and minimize stress concentrations, and the inner sides of the diaphragms are straight edges which result in a non-symmetric contour of the diaphragm walls.

A surgical instrument including a firing drive configured to selectively advance a firing member and / or cutting member relative to an end effector and, in addition, a reversing drive configured to selectively retract the firing member and / or cutting member relative to the end effector. The firing drive can include a pawl which can be selectively engaged with the firing member in order to advance the firing member, wherein the pawl can be disengaged from the firing member when the reversing drive is engaged with the firing member. The reversing drive can include a gear train having a first gear operably engaged with the firing member and, in addition, a second gear operably engaged with the first gear, wherein the second gear can be selectively operable with the trigger such that an actuation of the trigger can retract the firing member and / or cutting element via the first and second gears.

A gas turbine engine includes an epicyclic gear train that drives a turbo fan. The epicyclic gear train employs a one-piece carrier in which the spaced side walls are interconnected with circumferentially spaced apart mounts to form a unitary structure. Baffles are secured to the carrier near the mounts and provide lubrication passages that spray oil onto the sun gear and / or intermediate gears arranged between the baffles. The baffles can be constructed from a different material than the carrier since the baffles are not structural components in the gear train.

A surgical instrument including a firing drive configured to selectively advance a firing member and / or cutting member relative to an end effector and, in addition, a reversing drive configured to selectively retract the firing member and / or cutting member relative to the end effector. The firing drive can include a pawl which can be selectively engaged with the firing member in order to advance the firing member, wherein the pawl can be disengaged from the firing member when the reversing drive is engaged with the firing member. The reversing drive can include a gear train having a first gear operably engaged with the firing member and, in addition, a second gear operably engaged with the first gear, wherein the second gear can be selectively operable with the trigger such that an actuation of the trigger can retract the firing member and / or cutting element via the first and second gears.

A self-contained axle module for a vehicle. The vehicle includes a support structure, a source for electric power, a source of cooling medium, and a vehicle control device. The self-contained axle includes a first side plate removably coupled to the support structure. A second side plate removably coupled to the support structure. A housing coupled to the first and second side plate. An electric motor coupled to the housing and the source for electric power. A motor drive controller unit coupled to the electric motor and to the vehicle control device to communicate signals to the vehicle control device such that one of the speed and torque of the electric motor is controlled based upon the signals. A gear train is mounted in the housing and coupled to the electric motor and an output shaft, wherein, the self-contained axle module can be selectively coupled and decoupled from the support structure.

A powered running board assembly has a deck and at least two hinges extending from the deck for mounting longitudinally the deck to an underside of a vehicle. Each hinge has a mounting bracket configured to mount to the underside of the vehicle. A pair of links pivotally extends between the deck and mounting bracket. The deck is movable between a retracted position and an extended position. A motor assembly operably engages at least one of the hinges to drive the deck between the retracted and extended positions. The motor assembly extends substantially longitudinally. The motor assembly has a gear train and clutch assembly enabling the motor assembly to drive relative to the deck movement when the deck movement is prevented, and enabling manual deck movement when the motor assembly is not energized.

An engine is connected to a sun gear of a planetary gear train via a toroidal type continuously variable transmission. Driven wheels of a vehicle are connected to a ring gear of the planetary gear train. The sun gear and the ring gear are connected to each other by a first clutch. A shifter can connect a second clutch connected to the engine either to a carrier of the planetary gear train or the driven wheels. When the vehicle is started when a failure of the electronic central system has occurred, by engaging the first and second clutches with predetermined engagement forces while the second clutch is connected to the carrier by the shifter, change of the ratio of the toroidal type continuously variable transmission beyond either the LOW ratio or the OD ratio is prevented so as to avoid generating an excessive load.

An epicyclic gear carrier assembly for use in an epicyclic gear train of a gas turbine engine, the epicyclic gear train having a central axis and a plurality of epicyclic gears rotatable about individual gear axes. The epicyclic gear carrier assembly comprises at least a carrier plate defining a plurality of circumferentially spaced axle bores which are disposed radially outward from the central axis and are co-axial with the individual gear axes. A plurality of corresponding gear axles are disposed within the axle bores, and the plurality of epicyclic gears are rotatably mounted to the gear axles via bearing elements. An epicyclic carrier member comprises a plurality of axle engaging elements that are co-axial with the gear axles and are engaged thereto by load transmission members such that load is transferred from the gear axles to the epicyclic carrier member.

The present invention is a compound planetary gear system which has a moveable sun gear and a lockable sun gear to change the gear ratio between a high gear ratio and a pseudo 1:1 slipping ratio. The system makes use of a ratchet and pawl mechanism to provide a safety backup for when the lockable sun gear is locked. The invention may be used to move the aircraft from a stationary position, for taxiing, and for pre-rotating the wheels prior to landing.

A gear train of an automatic transmission for vehicles has the advantages of improving power delivery performance and reducing fuel consumption as a consequence of realizing more than eight forward speeds by combining four planetary gear sets with three clutches and three brakes.

A light switch cover for converting a standard toggle switch into a remote-controlled toggle switch. In one embodiment, the light switch cover comprises a switch toggle member for acting upon a toggle light switch member to place the toggle light switch member into either an on position or an off position, a gear train coupled to the switch toggle member that causes the switch toggle member to act upon the toggle light switch member, an electric motor, coupled to the gear train, for driving the gear train in a first direction to cause the switch toggle member to place the toggle light switch member into the on position, and for driving the gear train in a second direction to cause the switch toggle member to place the toggle light switch member into the off position, motor driving circuitry coupled to the electric motor, a receiver for receiving signals that cause actuation of the standard toggle switch, and processing circuitry coupled to the receiver and the motor driving circuitry that causes the light switch cover to receive a signal to turn the toggle switch into the on position and, in response, causing the electric motor to rotate in a direction to cause the switch toggle member to place the toggle light switch member into the on position.

An electrical power producing wind turbine eliminates the possibility of being struck by lightning, reduces the complexity of gear trains and simplifies maintenance at heights. The wind turbine is electrically isolated from ground to reduce the possibility of being struck by lightning and the generator is located at ground level to simplify maintenance. The turbine blade shaft is directly attached to a hydraulic pump. The hydraulic fluid is transmitted to ground level through dielectric tubing and acts both as an electrical isolating medium and a transmitter of mechanical energy to the generator located at ground level. The wind turbine blade, shaft and hydraulic pump are electrically isolated from the support structure at the upper end.